Gilroy (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Gilroy.
Climate overview of Gilroy
The climate in Gilroy, California, United States of America, is marked by large temperature swings across the seasons, ranging from 30°C (86°F) in July to 16°C (61°F) in December.
The city has a relatively dry climate, receiving around 428 mm (17 in) of rainfall per year. It does experience a distinct dry season from April to November. December is the wettest month and July the driest.
Gilroy Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Gilroy — and find the best time to visit.
Monthly Temperature in Gilroy
In Gilroy, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a very warm 30°C (86°F) in July to a moderate 16°C (61°F) in December.
Nighttime temperatures range from 13°C (55°F) in July to 4°C (39°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Gilroy
Gilroy tends toward drier weather patterns, receiving approximately 428 mm (17 in) of rain per year. The seasons in Gilroy bring significant changes in precipitation. The wettest month, December, receives moderate rainfall, with an average of 98 mm (3.9 in) of precipitation. This rainfall is distributed across 10 rainy days.
In contrast, the driest month, July, experiences much less rainfall, totaling 0 mm (0 in) over 0 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Gilroy Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Gilroy
Frequently asked questions about the climate in Gilroy
What is the best time to visit Gilroy?
March, April, May, June, September, October and November typically offer the most optimal weather in Gilroy. In contrast, January and December tend to have less optimal conditions. Gilroy has a distinct dry season from April to November.
What temperatures can I expect in Gilroy?
Daytime highs range from 16°C (61°F) in December to 30°C (86°F) in July. Nighttime lows range from 4°C (39°F) to 13°C (55°F). Temperatures vary considerably through the year.
How much rain does Gilroy get?
Annual rainfall is around 428 mm (17 in). December is the wettest month with 98 mm (3.9 in), while July is the driest with 0 mm (0 in).
Gilroy 3-Day Forecast
Gilroy (CA) 3-Day Forecast
Gilroy on the map
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